Finite temperature phase diagram of a polarized Fermi gas in an optical lattice

Abstract

We present phase diagrams for a polarized Fermi gas in an optical lattice as a function of temperature, polarization, and lattice filling factor. We consider the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO), Sarma or breached pair (BP), and BCS phases, and the normal state and phase separation. We show that the FFLO phase appears in a considerable portion of the phase diagram. The diagrams have two critical points of different nature. We show how various phases leave clear signatures to momentum distributions of the atoms which can be observed after time of flight expansion.

Journal version

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Cited by in corpus (16)

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• Phase diagram, extended domain walls, and soft collective modes in a three component fermionic superfluid
• Induced interactions for ultracold Fermi gases in optical lattices
• Phase separation in imbalanced fermion superfluids beyond mean-field
• Quantum phases of Fermi-Fermi mixtures in optical lattices
• Population imbalanced fermions in harmonically trapped optical lattices
• Noise correlations of the ultra-cold Fermi gas in an optical lattice
• Correlation Effects on Atom Density Profiles of 1-D and 2-D Polarized Atomic-Fermi-Gas Loaded on Optical Lattice
• Temperature Effects in a Fermi Gas with Population Imbalance
• Magnetic phases of one-dimensional lattices with 2 to 4 fermions per site
• Multiple-quantized vortices in rotating LOFF state of ultracold Fermi superfluid gas
• Interband physics in an ultra-cold Fermi gas in an optical lattice
• Phase diagram of imbalanced fermions in optical lattices
• Magnetism of quantum dot clusters: A Hubbard model study
• Bose condensation of interacting gases in traps with and without optical lattice